11002100020 has 12 divisors (see below), whose sum is σ = 23104410084. Its totient is φ = 4400840000.

The previous prime is 11002100009. The next prime is 11002100041. The reversal of 11002100020 is 2000120011.

It can be written as a sum of positive squares in 2 ways, for example, as 1665129636 + 9336970384 = 40806^2 + 96628^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11002099976 and 11002100012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275052481 + ... + 275052520.

It is an arithmetic number, because the mean of its divisors is an integer number (1925367507).

Almost surely, 2^11002100020 is an apocalyptic number.

11002100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11002100020 is an abundant number, since it is smaller than the sum of its proper divisors (12102310064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11002100020 is a wasteful number, since it uses less digits than its factorization.

11002100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550105010 (or 550105008 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 11002100020 its reverse (2000120011), we get a palindrome (13002220031).

The spelling of 11002100020 in words is "eleven billion, two million, one hundred thousand, twenty".